Accounts Payable and Accrued Expenses - Accounts payable and accrued expenses (Tables)

9 Months Ended

12 Months Ended

Apr. 30, 2015

Jul. 31, 2014

Payables and Accruals [Abstract]

Accounts payable and accrued expenses

	April 30, 2015		July 31, 2014
Accounts Payable and Accruals – General and Administrative	$	3,127,111	$	3,208,069
Accounts Payable and Accruals – Research and Development		3,699,158		3,955,543
Accounts Payable and Accruals – Selling and Marketing		326,586		327,067
Accrued Make-whole Payments on Convertible Preferred Stock (see Note 7)		233,077		337,500
Executive Compensation and Directors’ Fees Payable		236,547		205,943
Total	$	7,622,479	$	8,034,122

		July 31,
		2014		2013
Accounts Payable and Accruals - General and Administrative	$	3,208,069	$	3,447,618
Accounts Payable and Accruals - Research and Development		3,955,543		3,557,184
Accounts Payable and Accruals - Selling and Marketing		327,067		328,629
Accrued Make-whole Payments on Covertible Preferred Stock (see Note 9)		337,500		251,100
Executive Compensation and Directors’ Fees Payable		205,943		76,703
Total	$	8,034,122	$	7,661,234